The only thing I always remind people when installing different tires front to rear is you will never be able to rotate them and will defiantly end up wearing the outer tread off the front from normal cornering way before the rest of the tires even think about being worn out. But I do get the look thing and remember back in the 70s 80s and even into the 90s when putting 15s in the back and 14s in the front was all the rage. You just have to make the call based on your wallet and driving habits.